# Quickworm vs SLD System

The clearest difference is ads: SLD System at none against Quickworm's shown. SLD System also leads on iOS requirement (12.0 vs 16.0). Quickworm's advantage is update cadence (every 6 days vs every 3 weeks). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Quickworm ships an update every 6 days, SLD System every 3 weeks. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Quickworm | SLD System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/quickworm-ai-book-summaries/id6446362167/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | Ad-supported | — |
| Size | 19 MB | 31 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Nathaniel Brion Sison](https://appshunter.io/developer/1571263497) | [Manage](https://appshunter.io/developer/1601418123) |

## What reviewers say

### Quickworm

[App page](https://appshunter.io/ios/app/quickworm-ai-book-summaries/id6446362167)

Instantly generate clear, concise summaries of any book using AI. Perfect for students, professionals, and avid readers who want to grasp key ideas quickly. Save, share, and organize your summaries for easy access.

**Highlights:** Instant AI summaries, Quick or chapter-by-chapter summaries, Genre tags, Save favorites and bookmarks, Searchable history, Customizable reader settings, Share and copy summaries, Cloud sync across devices

**Features:** macOS Compatibility

**In-app purchases:** none


### SLD System

[App page](https://appshunter.io/ios/app/sld-system/id6741755009)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quickworm free?

Quickworm is free to download, with no in-app purchases.

### Is SLD System free?

SLD System is free to download, with no in-app purchases.

### Do Quickworm or SLD System have ads?

Quickworm shows ads; SLD System does not.

### Which is updated more often, Quickworm or SLD System?

Quickworm ships an update every 6 days, and SLD System every 3 weeks. Most recently, Quickworm was updated on September 11, 2026 and SLD System on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*